Plaster reenforcement



Nov. 2 1926.

H. H. ROBINSON PLASTER REENFORCEMEN Filed Jan. 13. 1926 I 'x'wivk m6 ms WITNESSES structure of'mg' directly upon t as... Nov. 2. 19 6. g

UNITED STATES nnnnnn'r PATENT OFFICE.

H FOBINSON, OI IOUN'I. LEBANON, PEKNSYLVANIA.

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Application Med Januar 13, ions. Serial no. mesa.

" ing to an exemplary'application.

vention is of wider a plicability; it may similarly serve in the acin with stucco of the outer walls of house, an generally in the spreading of material which hardens after strength. I and the manner of plaster, whether the s rface over which the material is spread be a wall surface or 9. H001 surface,or a surface else where situated. The objects of my invention are che ness. of production, and

urability of the finished structure.

In an a plication for Letters Patent of the Unite States, filed December. 5,1925,

' claims.

'besread;a.ex1

Serial No. 73,351, I have described such a structure, embodyin features which constitute invention as t erein claimed; in this diflering from that in detail and embodying other features which also are new with me and which I shall here define in my In the accompanying drawingIsI is a view in side elevation, Fig. a view in horizontal section, and Fig. IIIv a view in vertical section of a structure embod 'ng m invention. The planeof section of ig.

is in Ei I indicated by the dotted line 11-11, an similarly the lane of section of Fig. III is indicated by t e line IH-II I. FigsJIVand V. are-views in perspective,

and to larger scale, and illustrate, in alternative form," a detail of structure. From the showing of Figs. IVand 'V a certain component has, for clearness ofshowing,

been omitted.v The plarticula'r' form shown. in FigklIV is that w 'ch is-present-in Figs. The re-enforeement of my" present invention consists of fourv component elements; a fabric to give strengt penetrable by the laster'or other material to teria spacers, arranged between {fabric and backing; and securing strips. The fabric be applied Fig. 1"

wire fabric and the backing .shee

arts or 'blebacking of sheet ma- 1 in the specific embodiment here shown is the familiar square-mesh wire fabric.

This article is intended for use as resuit particular circumstances.

The backing of flexible sheet material is in this particular instance a sheet 2 of paper.

The paper is rather coarse in texture, heavy, and stron to sustain the pressure of wet plaster w en being The requisites of this backing sheet are that it shall be impenetrable by plaster, or sub-, stantially so, and that being attached at intervals to the wire fabric, it shall, when the laster is applied throu h the meshes of t 0 wire fabric, while ie ding slightly, still define the inner face 0 the spread sheet of laster. {The sheet of laster so spread W1 ofcourse surround and embed the wire 7 fabric. Manifestly other material than application I shall describe astructure paper may be employed .for the flexible articularlyservicea le in that, capable of ing made strong enough, it is cheap, and may be waterproofed. It ofiers a good bonding: surface,.permitting the plaster to harden and dry in a natural manner.

The spacing members 3 lie betw.

function is two-fold: to maintain t and backin sheet spaced apart, and so to insure the "fibeddmg of the fabric within the plaster Iiwen spread, remote from the inner as well" as from theouter surface of the spread layer; and their further function is to afford firm anchorage for the securing means. It is desired of the spacing'members that they shall be light and rigid and shall occupy little space. I show them to consist of a succession of strips. The particular shape of the. strips in cross-section ma besuch asis desired. I preferably ma e them T-sha e in cross section. They are laid'in paralle ism one with another and in parallelism with the strand wires of the fabric. Such a T-shaped strip may be spread upon' it.

formed of sheet metal, bent as indicated in r Fig. In the 'asembly the head of r the T abuts upon the surface of the web of paper, and upon the outstanding stem of the T the wire fabric bears.

The securing strips may be strips of metal 4, extending on the opposite surface of the web 2 of paper, that is to say, on the surface opposite that upon which the spacers 3 and the wire fabric 1 are assembled. Ihey extend in parallelism, spaced apart at suitable intervals, conveniently in parallelism also with the stay wires of fabric 1, and at right angles to the spacer strips 3.

Securing is preferably effected by means of tongues 41, slit from strips 4 and bent aside, thrust through the substance of the paper web 2. and bent about the wires of fabric 1, thus completing the assembly and securing the whole to constitute an integral structure, as it will be perceived to be. The spacer strips 3 preferably are arranged in the assembly immediately adjacent a strand 7 wire, so that a strand wire throughout its length lies close against the stem of the T while the stay wires (the wires running at right angles to the wires spoken of as strand wires) bear upon the end of the stem of the T. The underlying strip 4 passes beneath the spacer strip 3, and there the tongue 41 rises, and at its tip is turned about the end ofthe stem of the T and about the strand wire also. I use the terms stay wire and strand wire without technical discrimination, meaning merely to differentiate the wires of the fabric running in one direc tion from those running in the other direction.

In Fig. V various modifications in detail are indicated. The spacing strip 3 is indicated to be formed otherwise than by bending sheet material to T shape. The securing strip 4 is not slitted into tongues, but instead a length of wire 4:0 is shown to surround and to secure the strip 4 the strip 73*- and the strand wire of fabric 1, at the point of crossing.

The structure is assembled and integrated and is applied as a unit to the wall or other place of service. For use in building the inner walls of houses it may convenientl be made u in units fifty inches square. T ese ordinarily are nailed to place. The structure may be applied directly against the studding which forms a partition in the structure of a building. It will in such case preferably be applied with the vs acing strips 3 extending horizontally and ridging the intervals between the upright strur tural members. In such case the spacing strips will serve additionally as stiffening members.

It will be remarked that in my completed article the wire fabric is in its entirety arranged on one side of and at an interval from the web of paper. In conscquen e, when plaster is applied and spread the wire is embedded entirely and deeply within the layer of plaster. Thus the wire is protected from rusting, and the finished wall is not merely stronger and firmer, it is also more durable than otherwise would be the case.

I claim as my invention:

1. A foundation for material adapted tol be spread in layer form consisting of a sheet of fabricpervious to the material to be spread, a web of flexible material resistant to penetration by the material to be spread, a spacing member interposed between fabric and web, a strip extending upon the opposite surface of the web of flexible material, and a tie uniting said strip and fabric.

2. A foundation for material adapted to be spread in layer form consisting of a sheet of fabric pervious to the material to be spread, a web of flexible material resist-- ant to penetration by the material to be spread, a spacing member interposed between fabric and web, and a strip extending upon the opposite surface of the web of flexible material, the said strip being provided with tongues bent from the strip and penetrating the web of flexible material and engaging the fabric.

3. A foundation for material adapted to be spread in layer form consisting of a sheet of wire fabric composed of two sets of parallel wires overlaid set upon set and united at the crossing, a web of flexible material, a spacing strip of T-shaped cross-section bearing upon'its head upon the said web of flexible material and its stem extending adj aeent one of the underlying strands of said fabric, and a securing strip extending upon the opposite surface of said web of flexible material, said securing strip being provided with a bent tongue which penetrating said web is turned about the stem of said T-shaped spacingstrip and about the adjacent strand of the fabric.

In testimony whereof I have hereunto set my hand.

HERBERT H. ROBINSON.

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